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克隆水稻产量相关新基因——水稻穗粒数相关基因(NOG1)
双击滚屏 【类别:行业动态.国内动态】 发布者:admin 发布时间:2017/11/14 阅读:258次 【字体:

 

近日,Nature Communications 在线发表中国农大孙传清和谭禄宾团队题为“NOG1 increases grain production in rice”研究论文,克隆了水稻穗粒数相关基因NUMBER OF GRAINS 1 (NOG1),在水稻品种特青中过表达该基因可以提高产量达19.5%,并且不影响水稻其他农艺性状。

对该基因进一步分析表明,该基因编码烯酰-CoA水合酶/异构酶蛋白(enoyl-CoA hydratase/isomerase),其启动子区域的12 bp的插入可以增加NGO1基因的表达量进而增加穗粒数,研究还发现该基因参与调解茉莉酸水平及脂肪酸的β-氧化。

摘要:

During rice domestication and improvement, increasing grain yield to meet human needs was the primary objective. Rice grain yield is a quantitative trait determined by multiple genes, but the molecular basis for increased grain yield is still unclear. Here, we show that NUMBER OF GRAINS 1 (NOG1), which encodes an enoyl-CoA hydratase/isomerase, increases the grain yield of rice by enhancing grain number per panicle without a negative effect on the number of panicles per plant or grain weight. NOG1 can significantly increase the grain yield of commercial high-yield varieties: introduction of NOG1 increases the grain yield by 25.8% in the NOG1-deficient rice cultivar Zhonghua 17, and overexpression of NOG1 can further increase the grain yield by 19.5% in the NOG1-containing variety Teqing. Interestingly, NOG1 plays a prominent role in increasing grain number, but does not change heading date or seed-setting rate. Our findings suggest that NOG1 could be used to increase rice production.

全文开放阅读:http://www.nature.com/articles/s41467-017-01501-8

 
 

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